// plugin
jQuery.fn.equalHeights=function() {
        var maxHeight=0;

        this.each(function(){
                if (this.offsetHeight>maxHeight) {maxHeight=this.offsetHeight;}
        });

        this.each(function(){
                $(this).height(maxHeight + "px");
                if (this.offsetHeight>maxHeight) {
                        $(this).height((maxHeight-(this.offsetHeight-maxHeight))+"px");
                }
        });
};

// usage
$(function() {
    $('#rf-10, #rf-11,').equalHeights();
});